Free Wow & Flutter Removal - pyrespeeder

I developed a free tool for the restoration of wow and flutter artifacts, especially for bootleg recordings. It can work with any source medium and has several modes of operation. You can remove both irregular and cyclic distortions. In most cases, you can get much better results than with Capstan. Of course, it's not fully automatic, but you have the choice of several different tracing algorithms to make work easier.

Here's a screenshot of the program:

And a comparison of the effect of cyclic wow removal and the raw source: